Q. The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is

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Q. Secondary cooling circuit is a must in molten sodium cooled fast breeder reactor for

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Q. The main purpose of control rod in a nuclear reactor is to control the

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Q. Nuclear power reactor located at Tarapur is of __________ type.

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Q. Which of the following is not an ore of uranium ?

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Q. Which one is different for the neutral atoms of the isotopes of an element ?

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Q. The first underground nuclear test was conducted by India at

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Q. Main source of __________ is monazite sand.

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Q. A radioactive isotope undergoes decay with respect to time following __________ law.

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Q. Atoms of U-238 and U-235 differ in structure by three

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Q. Heavy water (D₂O) in a nuclear reactor serves as a

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Q. Fast breeder reactors are most usable in India, because of our largest __________ deposits.

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Q. In the nuclear reaction, ₉₃N²³⁹ → ₉₄Pu²³⁹ + ?; the missing particle is a/an

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Q. Critical energy should be __________ the neutron binding energy of the atom in order to initiate a nuclear fission.

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Q. The main ore of thorium is

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Q. Radioactive decay is a __________ change.

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Q. A moderator __________ the neutrons.

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Q. Thorium can be converted into U-233 in a __________ reactor.

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Q. Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher

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Q. Nuclear fuel complex, Hyderabad is engaged in the job of

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